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湖南骑田岭复式花岗岩体是南岭花岗岩的代表性岩体之一,由于在岩体内部以及与围岩内外接触带上发现了大量W、Sn多金属矿床,其中不少达到大型甚至超大型的规模,因此,有关骑田岭花岗岩体的年龄、地球化学特征、侵入机制和成矿关系引起了广大地质工作人员的密切关注。骑田岭岩体具有多阶段侵入特征,根据花岗岩的形成时间,骑田岭岩体的主体可以分为三个阶段:早期形成的角闪石黑云母花岗岩,有少量的黑云母花岗
The Qitianling complex granite in Hunan Province is one of the representative rocks of Nanling granite. Due to the discovery of a large number of W, Sn polymetallic deposits on the inner and outer contact zones of the rock mass and the surrounding rock, many of them reach large or even very large Therefore, the age, geochemical characteristics, intrusive mechanism and mineralization relationship of the Qitianling granite body have aroused close attention of the general geological staff. The Qitianling pluton has multi-stage intrusive features. According to the formation time of the granite, the main body of the Qitianling pluton can be divided into three stages: the early formed amphibole-biotite granite with a small amount of biotite granite